// L is a data structure also known as a linked list. It has: struct L { int d; // a value L *p; // a pointer to the next element } // it creates the first element of the linked list, and assigns it a value of 3 L* l = new L; l->d … Read more
Here is the problem, void readStructs(tMystruct *theVar) { scanf(“%d”,theVar.id); //<——problem scanf(“%f”,theVar.length); //<——problem } You should access Structure pointer member using -> operator and also you’re missing & that will eventually cause a segmentation fault. Here is the modified code, void readStructs(tMystruct *theVar) { scanf(“%d”,&theVar->id); scanf(“%f”,&theVar->length); } solved How to pass structure by reference in C?
You can’t print the two values by using x[i]. You must print them one-by-one. You probably want something like: for (i=0;i<12;i++) { printf(“\t index %d value %f, %f \n\r”,i, x[i].a, x[i].b); } 1 solved Printing Array in struct
Random act of madness kindness: Live On Coliru #include <fstream> #include <set> struct Person { std::string name; std::string nationality; std::set<std::string> hobbies; friend std::istream& operator>>(std::istream& is, Person& into) { size_t n = 0; if (getline(is, into.name) && getline(is, into.nationality) && is >> n && is.ignore(1024, ‘\n’)) { while (n–) { std::string hobby; if (getline(is, hobby)) into.hobbies.insert(hobby); … Read more
From your code – assuming the function stats is being executed one per game iteration. the gamesStruct local variable is being destroyed at end of stats and being declared (and initialized) again and again. this is why the previous result is cleared. you should declare the gamesStruct at tge calling API and pass it by … Read more
restavracija is a type, not an object. You have to instantiate it to produce an object. In this particular case, it looks like you’re expecting an array of them, and you want to call that array polje. Such an array declaration will look something like: restavracija polje[10]; Accessing element i in that array will then … Read more
List test = NULL; one(&test); test is a pointer to struct node. We pass the address of that pointer to one, allowing one to change test (letting it return a new pointer is a cleaner way to do this). one then executes this: two(&self); two is now being passed the address of the address of … Read more
I’m not sure what your question is, but this code probably doesn’t do what you want: printf(“main Pointer to struct.” EOL); for (int i=0; i<count; i++) { printf(“index: %d useless1: %d” EOL, i, b->useless1); printf(“index: %d useless2: %d” EOL, i, b->useless2); b++; } printf(EOL); printf(“main Index into array of structures.” EOL); for (int i=0; i<count; … Read more
Here you have again some things wrong. Before you create new threads with similar content, stick to one thread. In your code you also never check if malloc fails. It’s always better to do that. For simplicity I’ve omitted these checks in my suggestions. 1. Why do you do S1[0].top=-1; in makeEmpty? create already does … Read more
Remember pressing Enter after entering data for the previous scanf? This newline character is consumed by the scanf with a %c. You have to change scanf(“%c”,&ch); fflush(stdin); to scanf(” %c”, &ch); so that the scanf will skip the newline character left over by the previous scanf. The space before %c is a whitespace character and … Read more
If I understand you correctly, you have a structure containing several members of different types and you are looking for a way how you could compare instances of this struct. It could look the following way: struct X { std::string s; char c; int i; bool operator==(const X& ref) { return s == ref.s && … Read more
First of all, your function print_people has a bug. The line for (size_t i = 0; people[i].name[0]; ++i) is wrong. It will read from the array out of bounds, because the loop condition people[i].name[0] is wrong. This loop condition would only be correct if the array were terminated by an element which has name[0] set … Read more
In your array declaration and definition of calc_comp_total, Salesman has not yet been defined, nor declared. The simple fix is to move the definition of Salesman above those constructs. However, you might be better off defining it in a header file, then including that in your implementation file. 2 solved C++ errors when structures not … Read more
In C++, using malloc the way you are using it is undefined behavior, as it does not perform object initialization, which means that it’s not calling the vector’s constructor (but there are other things that are not done, as initializing the vtable if there was one, for example). In your example, you should use new: … Read more
You must declare func2 before newNode. Forward references are not possible. possibly, you DID declare func2 before but it had a compile error itself, please check further above in the log. By the way, newNode is not “the struct”. “The struct” is that variable what you have named node and is not declared, which does … Read more